Ternary meaning

tûrnə-rē
Frequency:
Composed of three or arranged in threes.
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A group of three.
noun
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Made up of three parts or things; threefold; triple.
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Third in order or rank.
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(chem.) Of or containing three different atoms, elements, radicals, etc.
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(metallurgy) Of an alloy of three elements.
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(rare) A group or set of three.
noun
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Made up of three things; treble, triadic, triple, triplex.
adjective
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Arranged in groups of three.
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(mathematics) To the base three.
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(mathematics) Having three variables.
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(chemistry) Containing, or consisting of, three different parts, as elements, atoms, groups, or radicals, which are regarded as having different functions or relations in the molecule.

Sodic hydroxide, NaOH, is a ternary compound.

adjective
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A group of three things; a trio, threesome or tierce.
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Origin of ternary

  • Middle English from Latin ternārius from ternī three each tern2

    From American Heritage Dictionary of the English Language, 5th Edition

  • Late Latin ternarius (“consisting of three things"), from terni (“three each").

    From Wiktionary